test_expect_success '--for-status' "
git submodule summary --for-status HEAD^ >actual &&
test_cmp actual - <<EOF
-# Modified submodules:
+# Submodule changes to be committed:
#
# * sm1 $head6...0000000:
#
test_must_fail git submodule summary --files --cached
"
+test_expect_success 'should not fail in an empty repo' "
+ git init xyzzy &&
+ cd xyzzy &&
+ git submodule summary >output 2>&1 &&
+ test_cmp output /dev/null
+"
+
test_done